Object obj = this.children[0].getValue(ctx);
if (obj == null) {
return new Long(0);
}
if (obj instanceof BigDecimal) {
return ((BigDecimal) obj).negate();
}
if (obj instanceof BigInteger) {
return ((BigInteger) obj).negate();
}
if (obj instanceof String) {
if (isStringFloat((String) obj)) {
return new Double(-Double.parseDouble((String) obj));
}
return new Long(-Long.parseLong((String) obj));
}
Class type = obj.getClass();
if (obj instanceof Long || Long.TYPE == type) {
return new Long(-((Long) obj).longValue());
}
if (obj instanceof Double || Double.TYPE == type) {
return new Double(-((Double) obj).doubleValue());
}
if (obj instanceof Integer || Integer.TYPE == type) {
return new Integer(-((Integer) obj).intValue());
}
if (obj instanceof Float || Float.TYPE == type) {
return new Float(-((Float) obj).floatValue());
}
if (obj instanceof Short || Short.TYPE == type) {
return new Short((short) -((Short) obj).shortValue());
}
if (obj instanceof Byte || Byte.TYPE == type) {
return new Byte((byte) -((Byte) obj).byteValue());
}
Long num = (Long) coerceToNumber(obj, Long.class);
return new Long(-num.longValue());
